feat: multi language support (#254)

* feat: multitranslational support

* - completion of settings page
- completion of sidebar

* sidebar rerendering bug fix

* completion of the lesson navigation & materials page

* completion of the course navigation

* completion of requested languages

* - Implementation of Language Picker
- Rename Bug Fixes

* checkpoint save

* - addition of the language picker to the onboarding.
- addition of the language switcher for the lesson notes.

* merge completion

* initialization of the new branch

* add transition.svelte file

* lesson note bug fix

* feat: add translation migration

* completion of translation

* fix height issue of dropdown

* refactoring

* fix: improve code with LOCALE from db

* finally get it fully functional

* connect with AI

* backward compatibility for lesson note

* preserve old content, when generating AI content

* undo translations in upgrade modal

* fix duplicate key issue from codacy trigger

---------

Co-authored-by: Rotimi Best <[email protected]>

apps/dashboard/src/lib/components/MarkdownEditor/index.svelte

@@ -1,4 +1,6 @@
 <script>
+  import { t } from '$lib/utils/functions/translations';
+
   export let value;
   export let placeholder = ``;
   const activeClassName = 'border-b-2 border-primary-700';
@@ -15,13 +17,13 @@
       on:click={handleTabClick(1)}
       class="focus:outline-none p-2 {isWriteMode && `${activeClassName}`}"
     >
-      Write
+      {$t('markdown_editor.write')}
     </button>
     <button
       on:click={handleTabClick(2)}
       class="focus:outline-none p-2 {!isWriteMode && `${activeClassName}`}"
     >
-      Preview
+      {$t('markdown_editor.preview')}
     </button>
   </div>